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Genetics
Iceland
2026
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Medicine
Iceland
2026

D-Index & Metrics

Genetics

D-Index
125
Citations
106874
World Ranking
309
National Ranking
6

Medicine

D-Index
125
Citations
108281
World Ranking
3004
National Ranking
2

Research.com Recognitions

  • 2026 - Research.com Genetics in Iceland Leader Award
  • 2026 - Research.com Medicine in Iceland Leader Award
  • 2025 - Research.com Medicine in Iceland Leader Award

Overview

Hreinn Stefansson is affiliated with deCODE Genetics in Iceland, where their research endeavors focus on genetics, molecular biology, and medicine. Their work spans several interconnected subfields including genetics, molecular biology, psychiatry and mental health, neurology, and cardiology and cardiovascular medicine.

Their main fields of study are medicine and biochemistry, genetics, and molecular biology. The scientist's research topics cover a variety of areas such as genetic associations and epidemiology, migraine and headache studies, genomics and rare diseases, attention deficit hyperactivity disorder, genomic variations and chromosomal abnormalities, bioinformatics and genomic networks, and genetics and neurodevelopmental disorders.

Hreinn Stefansson has contributed to numerous publications in a range of scientific journals. Frequent publication venues include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Nature Genetics
  • Nature Communications
  • UNC Libraries
  • Communications Biology

Collaboration with other researchers is an integral part of their work. Frequent co-authors include:

  • Kāri Stefánsson
  • Daníel F. Guðbjartsson
  • Ole Birger Pedersen
  • Sisse Rye Ostrowski
  • Unnur Þorsteinsdóttir

Recent papers featuring Hreinn Stefansson's contributions include:

  • Large-scale integration of the plasma proteome with genetics and disease, 2021, Nature Genetics
  • A genome-wide association study with 1,126,563 individuals identifies new risk loci for Alzheimer's disease, 2021, Nature Genetics
  • Genome-wide analyses of ADHD identify 27 risk loci, refine the genetic architecture and implicate several cognitive domains, 2023, Nature Genetics
  • The sequences of 150,119 genomes in the UK Biobank, 2022, Nature
  • Deciphering osteoarthritis genetics across 826,690 individuals from 9 populations, 2021, Cell

Best Publications

  • Biological insights from 108 schizophrenia-associated genetic loci

    Stephan Ripke;Stephan Ripke;Benjamin M. Neale;Benjamin M. Neale;Aiden Corvin;James T. R. Walters

  • Genome-wide association analyses identify 44 risk variants and refine the genetic architecture of major depression

    Naomi R. Wray;Stephan Ripke;Stephan Ripke;Stephan Ripke;Manuel Mattheisen;MacIej Trzaskowski

  • Variant of TREM2 associated with the risk of Alzheimer's disease

    Thorlakur Jonsson;Hreinn Stefansson;Stacy Steinberg;Ingileif Jonsdottir

  • Variant of transcription factor 7-like 2 (TCF7L2) gene confers risk of type 2 diabetes.

    Struan F. A. Grant;Gudmar Thorleifsson;Inga Reynisdottir;Rafil Benediktsson

  • Genome-wide association study identifies five new schizophrenia loci

    Stephan Ripke;Alan R. Sanders;Kenneth S. Kendler;Douglas F. Levinson

  • Genome-wide meta-analysis identifies new loci and functional pathways influencing Alzheimer's disease risk.

    Iris E. Jansen;Jeanne E. Savage;Kyoko Watanabe;Julien Bryois

  • Discovery of the first genome-wide significant risk loci for attention deficit/hyperactivity disorder

    Ditte Demontis;Ditte Demontis;Raymond K Walters;Raymond K Walters;Joanna Martin;Joanna Martin;Joanna Martin;Manuel Mattheisen

  • Common variants at ABCA7, MS4A6A/MS4A4E, EPHA1, CD33 and CD2AP are associated with Alzheimer's disease.

    Paul Hollingworth;Denise Harold;Rebecca Sims;Amy Gerrish

  • A mutation in APP protects against Alzheimer’s disease and age-related cognitive decline

    Thorlakur Jonsson;Jasvinder K. Atwal;Stacy Steinberg;Jon Snaedal

  • Neuregulin 1 and Susceptibility to Schizophrenia

    Hreinn Stefansson;Engilbert Sigurdsson;Valgerdur Steinthorsdottir;Soley Bjornsdottir

  • Association between Microdeletion and Microduplication at 16p11.2 and Autism

    Lauren A. Weiss;Yiping Shen;Joshua M. Korn;Joshua M. Korn;Dan E. Arking

  • Large recurrent microdeletions associated with schizophrenia

    Hreinn Stefansson;Dan Rujescu;Sven Cichon;Olli P. H. Pietilainen

  • Large-scale meta-analysis of genome-wide association data identifies six new risk loci for Parkinson's disease

    Mike A Nalls;Nathan Pankratz;Christina M. Lill;Chuong B. Do

  • Common variants conferring risk of schizophrenia

    Hreinn Stefansson;Hreinn Stefansson;Roel A. Ophoff;Roel A. Ophoff;Roel A. Ophoff;Stacy Steinberg;Stacy Steinberg;Ole A. Andreassen

  • Genome-wide association analysis identifies 13 new risk loci for schizophrenia

    Stephan Ripke;Stephan Ripke;Colm T. O'Dushlaine;Kimberly D. Chambert;Jennifer L. Moran

  • A variant associated with nicotine dependence, lung cancer and peripheral arterial disease.

    Thorgeir E Thorgeirsson;Frank Geller;Patrick Sulem;Thorunn Rafnar

  • Common schizophrenia alleles are enriched in mutation-intolerant genes and in regions under strong background selection

    Antonio F. Pardiñas;Peter Holmans;Andrew J. Pocklington;Valentina Escott-Price

  • Genome-wide association study identifies 30 loci associated with bipolar disorder

    Eli A. Stahl;Eli A. Stahl;Gerome Breen;Andreas J. Forstner;Andrew McQuillin

  • Genetics of gene expression and its effect on disease

    Valur Emilsson;Gudmar Thorleifsson;Bin Zhang;Amy S. Leonardson

  • Large-scale genome-wide association analysis of bipolar disorder identifies a new susceptibility locus near ODZ4

    Pamela Sklar;Pamela Sklar;Stephan Ripke;Stephan Ripke;Laura J. Scott;Ole A. Andreassen

Frequent Co-Authors

Kari Stefansson
Kari Stefansson deCODE Genetics (Iceland)
Thomas Werge
Thomas Werge University of Copenhagen
Ole A. Andreassen
Ole A. Andreassen Oslo University Hospital
Stacy Steinberg
Stacy Steinberg deCODE Genetics (Iceland)
Stephan Ripke
Stephan Ripke Massachusetts General Hospital
Srdjan Djurovic
Srdjan Djurovic Oslo University Hospital
Unnur Thorsteinsdottir
Unnur Thorsteinsdottir deCODE Genetics (Iceland)
Daniel F. Gudbjartsson
Daniel F. Gudbjartsson deCODE Genetics (Iceland)
Anders D. Børglum
Anders D. Børglum Aarhus University
Augustine Kong
Augustine Kong University of Oxford

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